/Engine/Source/Runtime/AudioMixer/Public/AudioMixerSubmix.h
Updates settings, potentially creating or removing ambisonics streams based on what types of submixes this submix is connected to.
void SetupSoundfieldStreams ( const [USoundfieldEncodingSettingsBase](API\Runtime\AudioExtensions\USoundfieldEncodingSettingsBase) * SoundfieldSettings, [TArray](API\Runtime\Core\Containers\TArray)< [USoundfieldEffectBase](API\Runtime\AudioExtensions\USoundfieldEffectBase) * > & Processors, [ISoundfieldFactory](API\Runtime\AudioExtensions\ISoundfieldFactory) * InSoundfieldFactory )